The purposes of this title  are—

((1)) to provide for the safe and sound operation of the banking system of the United States;

((2)) to preserve and protect the dual system of Federal and State-chartered depository institutions;

((3)) to ensure the fair and appropriate supervision of each depository institution, regardless of the size or type of charter of the depository institution; and

((4)) to streamline and rationalize the supervision of depository institutions and the holding companies of depository institutions.